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no stress showing up in the mechanical insertion of neural probe
Posted 2010年7月2日 GMT-4 14:18 0 Replies
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I am trying to model the mechanical insertion of the neural probes into the brain. The load pressing down on the implant is 10mN and the simulation lasts for 1s. The probe is made of silicon. I have made the brain a viscoelastic material with a bulk modulus of 2.19e9, shear modulus of 2805, and a density of 1040kg/m^3.
The problem I have right now is that there is Von Mises stress developed in the probe, but none whatsoever in the brain. I did a subdomain integration of the Von Mises stress in the brain and it's 0. What do you think the problem might be? I am attaching my COMSOL file, maybe you can take a look at it. I have been stuck on this for several days, so please help!
Thank you!
Joe
Hello Joe Xiao
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